Low-cost cultivation of Scenedesmus sp. with filtered anaerobically digested piggery wastewater: biofuel production and pollutant remediation

摘要: A laboratory study was conducted on biomass and lipid production by Scenedesmus sp. the removal of total nitrogen (TN) phosphorus (TP) from filtered anaerobically digested piggery wastewater. The dry weight (DW), content productivity, nitrogen, rate were assessed in five media: modified soil extract (MSE) medium, 5 % anaerobic wastewater (ADWW), 10 % ADWW, 15 % ADWW supplemented with NaNO3. highest productivity appeared group, which 20.4 % higher than MSE group. found group (31.60 %), while (27.01 mg L−1 day−1). Compared NaNO3 had a similar amount but lower productivity. fatty acids percentage showed slight difference different media, four dominant (C16:0, C18:1, C18:2, C18:3) accounting for 87 % acids, suggests that medium no terms composition content. TN rates 82.85, 82.51, 85.85, 91.28, 78.71 % groups 1 to 5, TP 53.05, 88.53, 87.77, 88.72, 80.64 %. Our experiment also shows feasibility using as substitute all elements except carbon, would significantly reduce costs microalgal culture.